Microelectrode Array (IMAGE) University of California - San Diego Caption This is a low-impedance, transparent graphene microelectrode array. The inset is a microscopic image of the 4 x 4 array. Credit Yichen Lu/<i>Advanced Functional Materials</i> Usage Restrictions Please credit: Yichen Lu/Advanced Functional Materials License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.